WG 3 - TC 23/SC 23K/WG 3

IEC 63402-2-2:2026 specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and the resource managers within the premises. It provides a technology independent set of data models and interaction patterns in order to enable applications for energy management within the premises. This document does not include:
– mappings to concrete data representations (XML, JSON and similar);
– mappings to application protocols for the message passing;
– security related aspects.
This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document

IEC 63402-1:2025 specifies general requirements and the architecture between the Point of Common Coupling (PCC) and smart devices (SD) operating within the Smart Grid premises-side system (i.e. residential or commercial but not industrial premises).
This document does not include requirements for:
- safety
- electromagnetic compatibility (EMC);
- data security, as it is assumed that the underlying protocols will take the data security aspect into account
- special equipment (e.g. legacy heat pumps) with a direct physical connection to the grid, as such equipment bypasses the customer energy manager (CEM) and is not HBES/BACS enabled (covered by other standards than the IEC 63402 series).
This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
It has the status of a group energy efficiency publication in accordance with IEC Guide 118.

IEC 63345:2023 specifies a data model to abstract the metering world towards a simple external consumer display. The data model, as described by means of functional blocks contained in this document, lays down the format of metering data accessible by a simple external consumer display. This data interface would be typically part of the meter communication functions and be accessed by a simple external consumer display via the H1 interface of CEN/CLC/ETSI TR 50572 between the display and the meter communication functions.